Followings are Samurai Shodown: Sen unlockable character and achievements hints. Darco and Golb two characters you can unlock and play with them. And there is eight more additional secret achivements, no description available for them.
Unlockable Characters
Draco: Complete story mode with twelve characters. Then, in the character selection screen, position yourself on Takechiyo and press LT.
Golb: Complete Story mode with the twenty-four characters. Then, in the character selection screen, position yourself on Haohmaru and press LT.
Achievements
Swordman (5 points):
To launch Slash 10 times successfully (in all modes except practice mode).
Senior swordman (10 points):
To launch Slash 50 times successfully (in all modes except practice mode).
Super swordman (25 points):
To launch Slash 100 times successfully (in all modes except practice mode).
The day of defiance (20 points):
To provocate the opponent for 50 rounds (in all modes except practice mode).
Survivor (10 points):
To kill 5 men in Survival mode.
Bloody hands (20 points):
To kill 13 men in Survival mode.
The invincible (30 points):
To kill 26 men in Survival mode.
Kill thousand of men (50 points):
To kill thousand of men (in any mode).
The Toughest warrior of Japan (5 points):
To kill the opponent with full HP (in Ranked match, within 1 round).
Unknown opponent (10 points):
To have Xbox LIVE fighting for once (regardless of the result, in any match).
Samurai spirit (20 points):
To win in Xbox LIVE fighting for 5 times (in Ranked match):.
Bushido (40 points):
To win in Xbox LIVE fighting for 20 times (in Ranked match).
Sura spirit (50 points):
To win in Xbox LIVE fighting for 50 times (in Ranked match).
The Toughest warrior on earth (15 points):
To kill the opponent with full HP (in Ranked match, within 1 match).
Great! (9 points):
To kill the opponent when you are dying (in Ranked match).
Wandering strong swordman (20 points)
To complete the Story mode with Haohmaru
The crimson murderousness (20 points):
To complete the Story mode with Genjuro
The lightning kicker (20 points):
To complete the Story mode with Hanzo
The sparkling destiny (20 points):
To complete the Story mode with Ukyo
The nature like mediums (20 points):
To complete the Story mode with Nakoruru
The native cheerful girl (20 points):
To complete the Story mode with Rimururu
The Impact Blue of Justice (20 points):
To complete the Story mode with Galford
The Heat-Fury Sword-Way (20 points):
To complete the Story mode with Kazuki
The Cool-Perfect Killer (20 points):
To complete the Story mode with Sogetsu
The Solid-Steel Fortress (20 points):
To complete the Story mode with Walter
The Huge Continental Wall (20 points):
To complete the Story mode with Wanfu
North Sea Unsinkable Ship (20 points):
To complete the Story mode with Garros
Beautiful strong man (20 points):
To complete the Story mode with Kyoshiro
Living war god in the west (20 points):
To complete the Story mode with Jinbei
One-eyed guardian (20 points):
To complete the Story mode with Jubei
Noble warrior on the earth (20 points):
To complete the Story mode with Blackhawk
Eternal war girl (20 points):
To complete the Story mode with Charlotte
Dancing man in death place (20 points):
To complete the Story mode with Kirian
Samurai of thundercloud (20 points):
To complete the Story mode with J.
Succeed tradition (20 points):
To complete the Story mode with Takechiyo
Golden wild wolf (20 points):
To complete the Story mode with Claude
Handing sword princess (20 points):
To complete the Story mode with Suzu
Cold-blooded death (20 points):
To complete the Story mode with Angelica
Ancestry of phantom bird (20 points):
To complete the Story mode with Kim Hae-ryeong
Wild Beast in the Wilds (25 points):
Draco unlocked (complete Story mode with 12 characters).
Nightmare of Lesphia (25 points):
Golba unlocked (complete Story mode with 24 characters).
Legendary hierophant (40 points):
To complete the Story mode with all characters (with the highest difficulty).
Additionally, there are eight secret achievements:
- Secret achievement (60 points): Unknown.
- Secret achievement (10 points): Unknown.
- Secret achievement (10 points): Unknown.
- Secret achievement (10 points): Unknown.
- Secret achievement (10 points): Unknown.
- Secret achievement (10 points): Unknown.
- Secret achievement (1 points): Unknown.
- Secret achievement (0 points): Unknown.
